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# -*- coding: utf-8 -*- """ Created on Tue May 14 15:37:59 2019 @author: Ai酱 """ class Mattrix: val = [] shape=(0,) def __init__(self,val): if type(val)==list: self.val...

(-2)**0.5和sqrt(-2)是不同的，前者是复数后者是会报错的。 print((-2)**0.5) #输出:(8.659560562354934e-17+1.4142135623730951j) import math math.sqrt(-2)#报错 ValueError: math domain error ...